What are the basic requirements for changing the components of the inverter regularly?

In the previous article, Sinol Electric told everyone that some parts of the inverter should be replaced regularly. Then, in this article, Sinol Electric is connected to a topic, with a brief understanding of the components of the inverter. What are the basic requirements for replacement?

1. To understand the basic parameters and shape of the device that needs to be replaced. The basic parameters include the rated operating current, the capacitance of the capacitor, the resistance of the resistor, the value of the GTR Darlington device (current amplification factor), the switching characteristics of the IGBT (including IPM) devices, and the saturation voltage. The form factor requirements include external dimensions, terminal locations and mounting styles, etc., and then replace the required components with the same requirements.

2. All connectors should be recorded or marked when disassembled to avoid misplacement during replacement or recovery.

3. The contact surface of the power device and the heat sink should be evenly coated with thermal grease and fastened with screws.

After zui, in most cases, the machine is in operation. When the machine is not running, the inverter needs to be properly stored and maintained.

1. custody

The room should be dry, no direct sunlight, no corrosive gas, no dust; relative humidity is 20%~90% and no frost; temperature is between -10~30 °C (if the temperature is around 40 °C, the storage period does not exceed 6) Month; around 50 °C, the storage period is no more than 3 months).

2. Maintenance

Since the electrolytic circuit uses a large number of electrolytic capacitors in the main circuit and the control circuit, if it is not used for a long time, the leakage will increase and the withstand voltage will decrease, that is, the acceleration will deteriorate (the higher the temperature, the faster the deterioration). Therefore, at least the power supply is added every year. Once, the repair power-on time is 30~60min. It is characterized by only energizing the inverter unit (do not need to connect the motor), and connect the input end of the inverter to the power supply.

The article is over here, more about the content of the soft starter with a frequency converter, please continue to pay attention to our Sinol electrical, you can also pay attention to our public number: Sinol Electric.